Twitter is the most famous Microblogging site used by users all over the world. There are some famous Open source microblogging site available. Following are few among the Open source PHP scripts.

1. StatusNet: Previously Laconica, is the engine which runs the popular microblogging site Identi.ca. You can download the same from here.

2. PageCookery: PageCookery is the first public offering of single-user version of the open source microblogging program, PHP + MySQL based architecture is a set of safety, efficiency and stability, to “share”, “discovery” for the concept of Web 2.0 solutions to micro-blog. Click here to download.

3. JaikuEngine: Jaiku was the microblogging site of Google. However, they decided no longer to develop the code but make it open source under the name JaikuEngine.

5. Storytlr: Storytlr offers a single touch point for your online life in your own style. Easily post anything you find interesting, import your web 2.0 stuff and share your life online. Storytlr is an open source lifestreaming and micro blogging platform. You can use it for a single user or it can act as a host for many people all from the same installation. Click here to download.

6. Jisko: Jisko is a light-weight open-source microblogging system that allows you to stay in contact with the people you want. Click here to Download.

7. WordPress: The WordPress is a popular blogging tool. But the Power of wordpress can be derived to work as a Microblogging application with the help of a simple theme. P2 WordPress Theme converts the Powerful WordPress into a Microblogging tool. Click here to download.

8. Yonkly: Yonkly Open Source twitter-clone and microblogging platform developed on the asp.net mvc framework. It is the famous Open Source app available in the Dot Net side other than the PHP scripts. Click here to Download.